12. a mixture of hydrogen and oxygen at one bar pressure contains 20% by weight of hydrogen. partial pressure of hydrogen will be (a) 0.2 bar (b) 0.4 bar (c) 0.

Dear sourav Refer the attached solution 👇

let's suppose we have 100g in total. Therefore, we'll be having 20g of H2 and 80g of O2.. calculate the number of moles of H2 as well as O2. Then apply Dalton's law of partial pres...

The correct answer is Option (C), Sourav! 😊

Hope this will helps😊